Enter a regex pattern and test string to see matches
Enter a regex pattern to see its explanation
Welcome to Regexplorer
Your regex builder & tester
Build Your Regex
Type your regular expression in the top bar. Toggle flags like global (g), case insensitive (i), multiline (m), and dotAll (s) with a single click.
Test Instantly
Paste your test string on the left panel. Matches are highlighted in real-time with alternating colors. Click any match in the results to scroll to it.
Learn & Explore
The Explain tab breaks down your regex token by token. Use the Cheat Sheet for quick reference and the Library for common patterns. Click any cheat sheet pattern to insert it.
Replace & Export
Use the bottom panel to test replacements and export your regex for JavaScript, Python, Go, Java, Ruby, PHP, or C#. Everything runs 100% in your browser.